Tablet screening device of rotary tablet press

Abstract

The tablet screening device of the rotary tablet press comprises a base, a vibration motor is arranged on one side of the top of the base, a bottom screening mechanism is fixedly connected to the center of the top of the base, and the top of the bottom screening mechanism is connected with a middle screening mechanism and a top screening mechanism in a clamped connection mode. Wherein the diameters of the bottoms of a first screening area and a second screening area in the middle screening mechanism and the top screening mechanism are different, so that tablets can be screened, large tablets are located in the second screening area, middle tablets are located in the first screening area, qualified tablets are located in a recovery drawer, and then screening of the tablets is achieved; and the tablets with unqualified thicknesses are screened out, and certain practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical equipment technology, specifically a tablet screening device for a rotary tablet press. Background Technology

[0002] Currently, tablet presses are the main equipment in the tablet production process of the pharmaceutical industry. A rotary tablet press consists of multiple sets of punches evenly distributed on a turntable that move in a circular motion along a specific trajectory, compressing granular materials into tablets via pressure rollers. The pressure adjustment during tableting affects the actual thickness of the tablets. In ordinary rotary tablet presses, the tablet thickness is adjusted separately for the inner and outer tracks using handwheels. However, if uneven tablet thickness is caused by material factors such as punch sticking or upper punch edge curling, the tablets of varying thicknesses sliding down the ejection device will mix together, making it difficult to separate tablets that do not meet the thickness requirements. Utility Model Content

[0003] The purpose of this invention is to provide a rotary tablet press tablet screening device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A rotary tablet press screening device includes a base, a bottom screening mechanism, a middle screening mechanism, and a top screening mechanism. The bottom screening mechanism is fixedly connected to the top center of the base. The bottom screening mechanism has an inner cavity on its front side, and a recycling drawer is slidably connected to the inner cavity of the bottom screening mechanism. The middle screening mechanism and the top screening mechanism are sequentially arranged on the top of the bottom screening mechanism. A slot is provided at the top corner of the bottom screening mechanism, and a locking block is engaged with the slot of the bottom screening mechanism. The locking block is located at the bottom of the middle screening mechanism. A slot for the middle screening mechanism is provided at the top of the middle screening mechanism and at the top slot of the bottom screening mechanism. A locking block is engaged with the slot of the middle screening mechanism, and the locking block is located at the bottom of the top screening mechanism.

[0006] The bottom screening mechanism, the middle screening mechanism, and the top screening mechanism are provided with connecting plates on both sides. A stud passes through the three connecting plates on the same side. Nuts are sleeved on both ends of the surface of the stud. The bottom of the nuts contacts the top of the connecting plate of the top screening mechanism and the bottom of the connecting plate of the bottom screening mechanism, respectively.

[0007] Preferably, a vibration motor is provided on the top of the base.

[0008] Preferably, the top screening mechanism has a feed inlet at its top center.

[0009] Preferably, the top screening mechanism and the middle screening mechanism are respectively provided with a second screening area and a first screening area, and the bottom diameter of the first screening area is smaller than the bottom diameter of the second screening area.

[0010] Preferably, both the first sieving area and the second sieving area are provided with a buffer pad, and the surface of the buffer pad is provided with elastic protrusions.

[0011] Preferably, a circular hole is provided at the top of the bottom screening mechanism and at the bottom corresponding to the first screening area.

[0012] Preferably, the bottom of the recycling drawer is provided with a rubber cushioning pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses a rotary tablet press tablet screening device. A middle screening mechanism and a top screening mechanism are connected to the top of the bottom screening mechanism via a snap-fit ​​connection. The diameters of the bottom of the first and second screening areas within the middle and top screening mechanisms are different, thus screening the tablets. Large tablets are located in the second screening area, medium-sized tablets are located in the first screening area, and qualified tablets are located in the collection drawer. This achieves tablet screening, removing tablets that do not meet thickness requirements, and has practical applications.

[0015] This utility model discloses a rotary tablet press tablet screening device, in which buffer pads and rubber buffer pads are respectively provided in the first screening area, the second screening area, and the collection drawer. During the movement of the tablets, the buffer pads provide a certain degree of protection for the tablets. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] In the diagram: 1. Base; 2. Vibration motor; 3. Bottom screening mechanism; 4. Middle screening mechanism; 5. Top screening mechanism; 6. Slot; 7. Feed inlet; 8. Connecting plate; 9. Stud; 10. Nut; 11. Recycling drawer; 12. Rubber buffer pad; 13. Block; 14. First screening area; 15. Second screening area. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figure 1-2 This utility model provides a technical solution:

[0023] A rotary tablet press screening device includes a base 1, a bottom screening mechanism 3, a middle screening mechanism 4, and a top screening mechanism 5. The bottom screening mechanism 3 is fixedly connected to the top center of the base 1. The bottom screening mechanism 3 has an inner cavity on its front. A recycling drawer 11 is slidably connected to the inner cavity of the bottom screening mechanism 3. The middle screening mechanism 4 and the top screening mechanism 5 are arranged sequentially on the top of the bottom screening mechanism 3. A slot 6 is provided at the top corner of the bottom screening mechanism 3. A locking block 13 is engaged with the slot 6 of the bottom screening mechanism 3. The locking block 13 is located at the bottom of the middle screening mechanism 4. A slot 6 of the middle screening mechanism 4 is provided at the top of the middle screening mechanism 4 and at the corresponding slot 6 of the top of the bottom screening mechanism 3. The locking block 13 is engaged with the slot 6 of the middle screening mechanism 4. The locking block 13 is located at the bottom of the top screening mechanism 5.

[0024] The bottom screening mechanism 3, the middle screening mechanism 4, and the top screening mechanism 5 are provided with connecting plates 8 on both sides. A stud 9 passes through the three connecting plates 8 on the same side. Nuts 10 are sleeved on both ends of the surface of the stud 9. The bottom of the nuts 10 contacts the top of the connecting plate 8 of the top screening mechanism 5 and the bottom of the connecting plate 8 of the bottom screening mechanism 3, respectively.

[0025] Furthermore, a vibration motor 2 is installed on the top of the base 1. The vibration motor 2 is started during the sieving process of the tablets. After the vibration motor 2 is started, it will vibrate the bottom sieving mechanism 3, the middle sieving mechanism 4, and the top sieving mechanism 5, so that the tablets inside will also vibrate, making it easier for the tablets to flow out from the bottom of the first sieving area 14 and the second sieving area 15.

[0026] Furthermore, the top screening mechanism 5 has a feed inlet 7 at its top center.

[0027] Furthermore, the top screening mechanism 5 and the middle screening mechanism 4 are respectively provided with a second screening area 15 and a first screening area 14, and the bottom diameter of the first screening area 14 is smaller than the bottom diameter of the second screening area 15.

[0028] It should be noted that the bottom diameter of both the first sieving area 14 and the second sieving area 15 is smaller than the diameter of the tablet. The diameter here refers to the diameter through which different tablet thicknesses can pass. The diameter through which medium-thickness tablets can pass is the bottom diameter of the second sieving area 15, and the diameter through which qualified tablets can pass is the diameter of the first sieving area 14.

[0029] Furthermore, a round hole is provided at the top of the bottom sieving mechanism 3 and at the bottom of the first sieving area 14. Finally, the qualified tablets will fall into the recycling drawer 11 through the round hole, and the qualified tablets will be recycled.

[0030] Furthermore, the surfaces of the first sieving area 14 and the second sieving area 15 are both provided with buffer pads, and the surfaces of the buffer pads are provided with elastic protrusions. When the tablet collides with the buffer pads, the tablet will rotate to a certain extent, which facilitates the testing of the tablet thickness.

[0031] Furthermore, a rubber cushioning pad 12 is provided at the bottom of the inside of the recycling drawer 11.

[0032] Specifically, buffer pads and rubber buffer pads 12 are respectively installed in the first screening area 14, the second screening area 15, and the recycling drawer 11. During the movement of the tablets, the buffer pads provide a certain degree of protection for the tablets. When the tablets fall into the rubber buffer pads 12, they will be cushioned to a certain extent.

[0033] Working Principle: This utility model discloses a rotary tablet press screening device. The bottom screening mechanism 3 is connected to the middle screening mechanism 4 and the top screening mechanism 5 via a snap-fit ​​connection. The diameters of the bottom of the first screening area 14 and the second screening area 15 inside the middle screening mechanism 4 and the top screening mechanism 5 are different. During use, the feed inlet 7 is aligned with the tablet press outlet. After the tablets are dispensed from the press, they sequentially enter the second screening area 15 and the first screening area 14, thus screening the tablets. Large tablets are located in the second screening area 15, medium-sized tablets are located in the first screening area 14, and qualified tablets are located in the collection drawer 11. This achieves tablet screening, removing tablets with unacceptable thickness, and has practical applications.

[0034] In addition, to further secure the top screening mechanism 5 and the middle screening mechanism 4 to the bottom screening mechanism 3, they will be further secured by studs 9 to make the connection more stable.

[0035] It should be noted that when there are multiple tablets in the first screening area 14 and the second screening area 15, the middle screening mechanism 4 and the top screening mechanism 5 need to be removed respectively. After removing the excess tablets, the tablets should be screened again. At the same time, the tablet press should also be checked.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary tablet press tablet screening device, comprising a base (1), a bottom screening mechanism (3), a middle screening mechanism (4), and a top screening mechanism (5), characterized in that: The base (1) is fixedly connected to the bottom sieving mechanism (3) at the top center. The bottom sieving mechanism (3) has an inner cavity on its front. The inner cavity of the bottom sieving mechanism (3) is fitted with a recycling drawer (11). The top of the bottom sieving mechanism (3) is provided with a middle sieving mechanism (4) and a top sieving mechanism (5). The bottom sieving mechanism (3) has a slot (6) at the top corner. The slot (6) of the bottom sieving mechanism (3) is engaged with a block (13). The block (13) is located at the bottom of the middle sieving mechanism (4). The top of the middle sieving mechanism (4) and the slot (6) of the middle sieving mechanism (4) is provided at the top of the bottom sieving mechanism (3). The slot (6) of the middle sieving mechanism (4) is engaged with a block (13). The block (13) is located at the bottom of the top sieving mechanism (5). The bottom screening mechanism (3), the middle screening mechanism (4), and the top screening mechanism (5) are provided with connecting plates (8) on both sides. A stud (9) passes through the three connecting plates (8) on the same side. Nuts (10) are sleeved on both ends of the surface of the stud (9). The bottom of the nut (10) is in contact with the top of the connecting plate (8) of the top screening mechanism (5) and the bottom of the connecting plate (8) of the bottom screening mechanism (3).

2. The rotary tablet press tablet screening device according to claim 1, characterized in that: A vibration motor (2) is provided on the top of the base (1).

3. The tablet screening device for a rotary tablet press according to claim 1, characterized in that: The top screening mechanism (5) has a feed inlet (7) at its top center.

4. The tablet screening device for a rotary tablet press according to claim 1, characterized in that: The top screening mechanism (5) and the middle screening mechanism (4) are respectively provided with a second screening area (15) and a first screening area (14), and the bottom diameter of the first screening area (14) is smaller than the bottom diameter of the second screening area (15).

5. The rotary tablet press tablet screening device according to claim 4, characterized in that: Both the first screening area (14) and the second screening area (15) are provided with buffer pads, and the surface of the buffer pads is provided with elastic protrusions.

6. The tablet screening device for a rotary tablet press according to claim 1, characterized in that: A circular hole is provided at the top of the bottom screening mechanism (3) and at the bottom of the first screening area (14).

7. The tablet screening device for a rotary tablet press according to claim 1, characterized in that: The bottom of the recycling drawer (11) is provided with a rubber cushioning pad (12).

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